mute implementat

tonegen.cpp

@@ -11,6 +11,7 @@ toneGen::toneGen() {
     this->instrument = CHIPTUNE_INSTRUMENT_NOISE;
     this->volume = 0;
     this->effect = CHIPTUNE_EFFECT_FADEOUT;
+    this->muted = false;
 
     this->current_volume = this->nominal_volume = 1.0f;
 
@@ -37,6 +38,7 @@ void toneGen::setup(const uint8_t note, const uint8_t instrument, const uint8_t
     this->instrument = instrument;
     this->volume = volume;
     this->effect = effect;
+    this->muted = false;
 
     this->nominal_volume =  float(volume) / 15.0f;
     this->current_volume = this->effect == CHIPTUNE_EFFECT_FADEIN ? 0.0f : this->nominal_volume;
@@ -92,9 +94,13 @@ const int toneGen::getSamples(const int numSamples, Sint16 *buffer) {
                 buffer[i] = (rand()*2)-AUDIO_FORMAT_MAX_VALUE;
                 break;
         }
-        buffer[i] *= this->current_volume;
+        buffer[i] *= (muted ? 0 : this->current_volume);
     }
 
     this->current_pos += actual_samples_generated;
     return actual_samples_generated;
 }
+
+void toneGen::setMute(const bool value) {
+    muted = value;
+}